Improvement in steam-engines



i STATES ROBERT H. DAVIES, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO' HIM- SELF, JAMES W. LANDELL, AND THOS. J. YOUNG, OF SAME PLACE.

IMPROVEMENT IN STEAM-ENGINES.

Specification forming part of Letters Patent No. 47,766; dated May 16, 1865.

To all whom, t may concern:

Y Be it known that l,RoBn1t'r H. Dnvins, of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Steam-Engines and I do hereby declare that the following is a full and exact description thereof, reference being' had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to that class of steamengines, commonly called portable, in which the engine and boiler are attached together, the boiler serving as a foundation for the engine.

It consists in arranging a feed-water heater between the cylinder and boiler in such a manner as to prevent the expansion of the boiler putting a strain upon the engine.

To enable others skilled in the art to make and use my invention, I will proceed to deupon the boiler, but is not fastened to it, thus permitting a free expansion ofthe boiler.

B is the cylinder; C, the slide-bars lbolted to the cylinder at one end and to the heater D at the other; E, the pedestals for carrying the crankshaft.

F is a saddle bolted to the boiler, and supporting' the pedestals E.

rIhe cylinder B is bolted firmly to the heater D, and the exhaust-steam, escaping from the cylinder to the atmosphere, passes into the heater D, surrounding the pipe la lc, through which the cold water passes on its wayto the boiler.

I do not claim combining a heater and bedplate together and placing it between the cylinder and boiler When the cylinder and pedestals are both fixed to the same casting; but

I claim as my inventionl. The heater D, used as a bed-plate, but detached from the supports of the pedestals E, and lined to the boiler in such a manner as to prevent the expansion of the boiler from putting a strain upon the engine, substantially as shown and described.

2. The arrangement of the saddle F, cylinder B, slide-bars C, heater D, and boiler A, substantially as described.

ROBERT H. DAVIES.

Witnesses EDWARD BROWN, PARK MCFARLAND, Jr. 

